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Red Ledge Mine, Washington, Washington District (Omega District), Nevada Co., California, USA

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List of minerals arranged by Dana 8th Edition classification
Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Gold1.1.1.1Au
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
AmBnXp, with (m+n):p = 2:3
Stibnite2.11.2.1Sb2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Magnesiochromite7.2.3.1Mg(Cr,Al,Fe)2O4
AB8X16
Redledgeite (TL)7.9.5.2Ba(Ti4+6Cr3+2)O16
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Knorringite51.4.3a.4Mg3Cr2(SiO4)3
Uvarovite51.4.3b.3Ca3Cr2(SiO4)3
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Talc71.2.1.3Mg3(Si4O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals
'Chlorite Group'-
Clinochlore
var: Chromian Clinochlore
-Mg5(Al,Cr)2Si3O10(OH)8
Muscovite
var: Mariposite
-K(Al,Cr)2(Al,Si)4O10(OH)2
'Serpentine Group'-D2[Si2O5](OH)4 + or - nH2O


20 entries listed. 18 valid minerals.

References

Trask, John Boardman (1853), Report on the geology of the Sierra Nevada, or California Range: California Legislature, 4th. sess., Ap. To Jour., S. Doc. 59, 30 pp.: 25.

Hanks, Henry Garber (1884), Fourth report of the State Mineralogist: California Mining Bureau. Report 4, 410 pp. (includes catalog of minerals of California pp. 63-410), and miscellaneous observations on mineral products): 137.

Bradley, W.W., Huguenin, Emile, Logan, C.A., Tucker, W.B., and Waring, C.A. (1918), Manganese and chromium in California: California Mining Bureau. Bulletin 76, 248 pp.: 158.

Logan, Clarence August (1918), Unpublished Field Report, Nevada County No. 203, Red Ledge.

MacBoyle, Errol (1919), Mines and mineral resources of Nevada County: California Mining Bureau. Report 16, 270 pp. (published as separate chapter): 63, 67, 77.

Gordon, Samuel G. & E.V. Shannon (1928), Chromrutile a new mineral from California: American Mineralogist: 13: 69.

Melhase, John (1935c), Some garnet localities of California: Mineralogist: 3(11): 23.

Rocks & Minerals (1939): 14: 337.

Bradley, W.W. (1940), Thirty-sixth report of the State Mineralogist: California Division Mines Report 36: 69.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume I, John Wiley & Sons, New York: 559-560.

Rynearson, Garn Arthur (1953), Geological investigations of chromite in California: Chromite deposits in the northern Sierra Nevada, California. California Division of Mines and Geology Bulletin 134, part 3 chapter 5: 239.

Anonymous (1957), World news on mineral occurrences: Rocks & Minerals: 32: 12.

Strunz, Hugo (1961), “Chromrutil” von der Red Ledge mine ist kein rutil. Redledgeite: Neues Jahrb. Mineral., Monatsh.: 107-111.

Strunz, Hugo (1963), Redledgeite, eine TiO2-einlagerungestruktur analog kryptomelan: Neues. Jahrb. Min. mh. 5: 116-119.

McCulloch, W.C., Oesterling, W.A., Spurck, W.H., & Tischler, M.S. (1964), Minerals for Industry, Northern California, Southern Pacific Company: Vol. II: 31.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 118, 136, 137, 141, 143, 194, 203, 256, 319, 350.

Bancroft, Peter (1973) The World's Finest Minerals and Crystals. Viking Press: 154.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 130, 174, 434, 497.

Bancroft, Peter (1984) Gem and Crystal Treasures. Western Enterprises, Mineralogical Record: 15: 89.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10031922 & 10163996.

U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060570726.

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